Would you intervene with the course of nature if you witnessed an animal to animal attack?

Last Sunday,off the coast of Washington near Puget Sound,a roving pack of killer whales attacked an adult gray whale.If you would have been there and witnessed the occurrence and could have intervened in any sort of way to stop the attack,would you have done so or would you just let nature take it’s course ! If so would you have stayed and watched as I heard such attacks can be quite gruesome to witness.
*by intervene,I mean blow an air horn/make very loud noise or if you’re in a big enough boat to ram the killer whales or block them from reaching the gray whale!